code: def test_mode(self, values, categories, exp_mode):
      cat = Categorical(values, categories=categories, ordered=True)
      res = Series(cat).mode()._values
      exp = Categorical(exp_mode, categories=categories, ordered=True)
      tm.assert_categorical_equal(res, exp)
  
imports: import re
  import sys
  import numpy
  import pytest
  from pandas.compat import PYPY
  from pandas import Categorical, CategoricalDtype, DataFrame, Index, NaT, Series, date_range
  import pandas._testing
  from pandas.api.types import is_scalar
label_desc: Use image node_id 11 for calling the TestCategoricalAnalytics obj's underlying member method code with example usage: obj.test_mode(values, categories, exp_mode) without return types